51342336 has 110 divisors (see below), whose sum is σ = 153565940. Its totient is φ = 17086464.

The previous prime is 51342323. The next prime is 51342359. The reversal of 51342336 is 63324315.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 82635 + ... + 83253.

It is an arithmetic number, because the mean of its divisors is an integer number (1396054).

Almost surely, 2^51342336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51342336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76782970).

51342336 is an abundant number, since it is smaller than the sum of its proper divisors (102223604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51342336 is an equidigital number, since it uses as much as digits as its factorization.

51342336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 624 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 51342336 is about 7165.3566554638. The cubic root of 51342336 is about 371.6708847701.

It can be divided in two parts, 513 and 42336, that added together give a square (42849 = 207²).

The spelling of 51342336 in words is "fifty-one million, three hundred forty-two thousand, three hundred thirty-six".